In PHP, how would one take a string and separate the words into an array? Is there a way to split them by the spaces in the string? Also, how would you check if a word in an array starts with a character? The idea would be to have a textbox with come normal words and a hashtag. The PHP script would maybe underline or change the color of the hashtag when you submit the form. It would basically underline any word that started with a hash. Sorry if this doesn't make any sense.